Physical Measurements and Properties: Essential Tools for Lab
Objective: The objective of this laboratory experiment was to be able to measure different substances and determine its physical measurements and properties.
Introduction: All surrounding us there are many different substances and those substances are identified according to its physical and chemical properties (Lab Manual). The field of chemistry and medicine involves being able to determine measurements as well as physical properties. These concepts play a major role in these professions. A part of making a measurement is distinguishing its unit, whether its inches, centimeters, liters, or meters. A number is not highly likely to stand alone with no unit following it. In science, measurements are recorded using the metric system to represents its units, for it is more convenient and much simpler than the other system that the United States has become accustomed to (Lab Manual). The metric system simplifies measurements immensely because length is always measured as meters, volume is always measured as liters, and weight (mass) is always measured in grams (Lab Manual).
In this experiment, we are required to measure different substances and figure out some of its physical properties. Many times through a substance’s physical properties one is able to identify it. We found physical properties such as mass, volume, density, and specific gravity. Mass and volume are easily identified but density and specific gravity requires a formula to identify, which are the following:
Density= Mass/Volume (g/mL)
Specific Gravity= Density of a Substance/Density of water at 4°C (unitless)
Procedure: The entire procedure of this experiment was followed from the CHL 161 Laboratory Manual, La Salle University.
Experimental Results: The attached data and results sheet contains all information collected in laboratory. All calculations and observations are also recorded on this sheet.